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The type of hazards and hazardous events in watersheds, depend on land uses around them. Atrazine is an organic pollutant widely applied as a pesticide and it is a potential chemical hazard present in water sources, which cause water pollution and negative effects on aquatic life and human health, due to its high solubility and persistence in soil. However, for developing countries, monitoring and quantification of atrazine can be complex and costly; thus, to contribute to establishing strategies for risk assessment in water supply watersheds, it was evaluated the potential use of an easy, rapid and low-cost technique such as ultraviolet (UV) absorbance to identify the presence of atrazine. It was conformed distilled and surface water samples doped with Atrazine, and there were correlated with the UV typical spectrum indicator of organic material presence (wavelength λ: 200 - 300 nm). The optimal λ range was 203 - 223 nm to identify this substance at levels possible to be found in surface sources, being UV223 more adequate than UV254, which is more used to identify the presence of natural organic matter, which shows that UV223 is a complementary tool to chemical risk assessment for atrazine in drinking water supply systems.

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Torres Lozada P, Barba-Ho LE, Fuentes-López L, Cruz-Velez CH, Perez-Vidal A, Torres-Lopez WA. Applicability of UV absorbance as an indicator of Atrazine presence into risk management of water supply watersheds: No applied. inycomp [Internet]. 2021 May 18 [cited 2024 Dec. 22];23(2):e21410968. Available from: https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/10968

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Received 2021-01-25
Accepted 2021-03-20
Published 2021-05-18